Can anybody tell me about this?
Does this "connection pool" have something to do with multiple
database connection?
Or it is only for concurrent access with one database?


On Nov 17, 3:14 pm, "Jeremy Kemper" <[EMAIL PROTECTED]> wrote:
> Right. You need to use a nonblocking database driver to do concurrent 
> requests.
>
> You can do this with neverblock's database drivers and Active Record
> adapter (http://www.espace.com.eg/neverblock/benchmarks) or with
> jruby.
>
> Best,
> jeremy
>
> On Sun, Nov 16, 2008 at 5:25 AM, kang peng <[EMAIL PROTECTED]> wrote:
> > ok, so i think ActiveRecord is thread safe, right? if so, each request which
> > call to database will be processed one by one, not concurrent, this seems
> > RoR's will be not good when faces big amont of requests in a short time. is
> > it ture?
>
> > On Sun, Nov 16, 2008 at 7:24 PM, Jeremy Kemper <[EMAIL PROTECTED]> wrote:
>
> >> No, just one connection.
>
> >> On Sat, Nov 15, 2008 at 10:18 PM, kang peng <[EMAIL PROTECTED]> wrote:
> >> > thanks. so before Rails2.2, each request will open new connection to
> >> > database according to 'Active Record uses a single persistent
> >> > connection per thread'? because as i know, each request will start a new
> >> > thread, is it correct?
>
> >> > On Sun, Nov 16, 2008 at 12:29 PM, Jeremy Kemper <[EMAIL PROTECTED]>
> >> > wrote:
>
> >> >> On Sat, Nov 15, 2008 at 8:11 PM, Kang Peng <[EMAIL PROTECTED]> wrote:
> >> >> > does anyone know whether ActiveRecord has supported connection pool?
> >> >> > i
> >> >> > can't find articles talking about this, if so how to control it in
> >> >> > Rails apps.
>
> >> >> In Rails 2.1 and earlier, Active Record uses a single persistent
> >> >> connection per thread.
>
> >> >> Beginning in Rails 2.2, Active Record uses a connection pool. Install
> >> >> the 2.2rc2 release and give it a spin.
>
> >> >> Best,
> >> >> jeremy
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